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Scale invariant jets: from blazars to microquasars
I. Liodakis, V. Pavlidou, I. Papadakis +9
Black holes, anywhere in the stellar-mass to supermassive range, are often associated with relativistic jets. Models suggest that jet production may be a universal process common i…
RoboPol: Connection between optical polarization plane rotations and gamma-ray flares in blazars
D. Blinov, V. Pavlidou, I. Papadakis +21
We use results of our 3 year polarimetric monitoring program to investigate the previously suggested connection between rotations of the polarization plane in the optical emission…
37 GHz observations of narrow-line Seyfert 1 galaxies
A. Lähteenmäki, E. Järvelä, T. Hovatta +12
Observations at 37 GHz, performed at Metsähovi Radio Observatory, are presented for a sample of 78 radio-loud and radio-quiet narrow-line Seyfert 1 (NLS1) galaxies, together with a…
Symmetric Achromatic Variability in Active Galaxies -- A Powerful New Gravitational Lensing Probe?
H. K. Vedantham, A. C. S. Readhead, T. Hovatta +11
We report the discovery of a rare new form of long-term radio variability in the light-curves of active galaxies (AG) --- Symmetric Achromatic Variability (SAV) --- a pair of oppos…
The peculiar light-curve of J1415+1320: A case study in extreme scattering events
H. K. Vedantham, A. C. S. Readhead, T. Hovatta +12
The radio light-curve of J1415+1320 (PKS 1413+135) shows time-symmetric and recurring U-shaped features across the cm-wave and mm-wave bands. The symmetry of these features points…